609211 has 4 divisors (see below), whose sum is σ = 612000. Its totient is φ = 606424.

The previous prime is 609209. The next prime is 609221. The reversal of 609211 is 112906.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112906 = 2 ⋅56453.

It is a cyclic number.

It is not a de Polignac number, because 609211 - 2¹ = 609209 is a prime.

It is a super-2 number, since 2×609211² = 742276085042, which contains 22 as substring.

It is a Duffinian number.

609211 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (609221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1036 + ... + 1513.

It is an arithmetic number, because the mean of its divisors is an integer number (153000).

2⁶⁰⁹²¹¹ is an apocalyptic number.

609211 is a deficient number, since it is larger than the sum of its proper divisors (2789).

609211 is a wasteful number, since it uses less digits than its factorization.

609211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2788.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 609211 is about 780.5196986624. The cubic root of 609211 is about 84.7726798042.

It can be divided in two parts, 609 and 211, that added together give a triangular number (820 = T₄₀).

The spelling of 609211 in words is "six hundred nine thousand, two hundred eleven".